More specifically, Feustel and Arnold will move a component called a Pump Flow Control Subassembly (PFCS) from a spare parts platform on the station's truss "backbone" to its robotic arm.

According to Jordan Lindsay, the lead officer for today's spacewalk, in a briefing on May 8th, "We have a camera R&R [rest and recuperation] plan as well as a comm box...that will be part of the EVA as well". This is the eighth spacewalk for the Lake Orion native, who is joined by fellow Expedition 55 Flight Engineer Ricky Arnold to complete work on the outside of the ISS.

Feustel and Arnold arrived at the ISS on March 23 and are slated to return to Earth in October. With SpaceX quickly becoming a force to be reckoned with, the ability to better support their ships and Boeing's ships will be a welcome change for everyone involved.